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Most-used commands

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Connection

ctr --namespace=k8s.io --address=/run/containerd/containerd.sock Connect to containerd socket with kubernetes namespace export CONTAINERD_NAMESPACE=k8s.io Set default namespace for containerd commands export CONTAINERD_ADDRESS=/run/containerd/containerd.sock Set default socket address for containerd commands

Container Management

ctr containers list List all containers ctr containers create [flags] Create a new container ctr containers delete Delete a container ctr containers info Display detailed information about a container ctr containers label [flags] Set and clear container labels

Image Management

ctr images list List all images ctr images pull Pull an image from a registry ctr images push Push an image to a registry ctr images remove Remove an image ctr images import Import images from a tar file ctr images export [, ...] Export images to a tar file ctr images mount Mount an image to a directory ctr images unmount Unmount an image

Tasks

ctr tasks list List all tasks (running containers) ctr tasks start [flags] Start a container ctr tasks pause Pause a container ctr tasks resume Resume a paused container ctr tasks kill [flags] [signal] Send a signal to a container ctr tasks exec --exec-id [args...] Execute a command in a container ctr tasks ps List processes in a container ctr tasks metrics Get container metrics

Snapshots

ctr snapshots list List all snapshots ctr snapshots prepare [] Prepare a snapshot ctr snapshots view View snapshot details ctr snapshots remove Remove a snapshot ctr snapshots usage Get snapshot disk usage

Namespaces

ctr namespaces list List all namespaces ctr namespaces create Create a new namespace ctr namespaces remove Remove a namespace ctr namespaces label = Set a label on a namespace

Content

ctr content ls List all content ctr content get Get content by digest ctr content delete Delete content by digest ctr content ingest Ingest file content into containerd

Plugins

ctr plugins ls List all plugins